Khan, V. A., M. Shafiq, and K. Ebadullah. “ON PARANORMED I-CONVERGENT SEQUENCE SPACES OF INTERVAL NUMBERS”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), vol. 5, no. 1, Apr. 2014, pp. 103-14, https://ph03.tci-thaijo.org/index.php/jnao/article/view/2740.